Stop talking and come to a rational deduction (8)

I believe the answer is:

conclude

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'stop' is the definition.
(I know that close is a type of cease)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for conclude that I've seen before include "Close, end" , "Infer or bring to an end" , "Infer - close - resolve" , "Decide by reasoning or draw to a close" , "Terminate; deduce" .)

I've seen this clue in The Globe and Mail.

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